The 36-year-old Tomb Raider star was seen wearing the ring
on her wedding finger at the Chinese Art collection at the LA
County Museum earlier this month, where she was pictured with Brad
and their eldest son, Pax.

The ring, which is rumoured to cost around $250,000, was
custom made to fit Angelina's svelte finger:

"He [Pitt] wanted every aspect of it to be perfect, so I was
able to locate a diamond of the finest quality and cut it to an
exact custom size and shape to suit Angelina's hand," explained
Robert Procop.

The couple infamously got together after staring in Mr and
Mrs Smith together back in 2005, after Brad Pitt ended his
five-year marriage to Jennifer Aniston.

In the past the power couple have said it was the lack of
marriage equality that kept them from walking down the aisle. But
as of late, as their growing brood of six children grow older, they
have come under increased pressure to marry.